Diagonal of a Cube Formula

A cube is a special three-dimensional rectangular solid. A cube is a rectangular solid that has edges with all the same length. In other words, the length, width, and height are equal, and each of its six faces is a square. The main diagonal of a cube is the one that cuts through the center of the cube; the diagonal of a face of a cube is not the main diagonal. The main diagonal of any cube can be found by multiplying the length of one side by the square root of 3.